Slip



March 27, 1934.v E, A JOHN-SON SLIP Original Filed Oct. 29, 1927 gmewtow 1f bl? "B EDMNAJOHNSON.

Patented Mar. 27, 1934 SLIP Edwin A. Johnson, Houston, Tex, assignor to .i. H.

McEvoy & Company, a corporation I Original application Gctober 29, 1927, Serial No.

Divided and this application January 4, 1932, Serial No. 584,630

12 Glaims.

The present invention relates to an improvement in pipe engaging slips such as used in supill thehandles will not interfere with the positioning of the casing head cap, tubing head, or other fittings in and about the well.

The present application is a division of copending application Serial No. 229,653, filed Octo- 15 ber.29 1927, for a universal casing head, by JosephI-I. McEvoy, Sn, G. A. Humason and Edwin A. Johnson. 1 a

It is one of the objects of the invention to provide a set of slips comprising a plurality of jaw members which are hinged together so that the set of slips maybe handled as a unitary article.

Another object of the invention is to provide a slip wherein the individual jaws are pivoted together by means of hinged plates and wherein the 2 handles or means, for moving the slips are attaohedto the jaw members as well as the hinged plates.

Another object of the invention is to provide a slip construction wherein the handles for movi'illjng the slips can be collapsed by movement longitudinally of the jaw members so that they will not project above the top of the slips.

Another object of the invention is to provide a lift for the slips which lift may be shifted into 3d recesses provided in the outer surfaces of the jaw members.

A still further object of the invention is to provide lift means for a set of slips, which means may be telescoped along the sides of the slips and f Q whose upward movement is limited by the slip structure.

Other and further objects of the invention will be readily apparent when the following description is considered in connection with the accompanying drawing wherein Figure 1 is a top plan view of a set of slips constructed in accordance with the invention.

Figure 2 is a side elevation of the set of slips.

Figure 3 is a section taken on the line 33 of fiQ Figure l and looking in the direction of the arrows.

Figure 4 is a broken side elevation of the two jaw members in open position.

The slips of this invention can be used with 5. any type of rotary or casing head which is adapted to receive slips, but they are of particular advantage when used in connection with a casing head wherein the cap or other member is to be mounted above the slip construction. V

In Figure 1 the slipsare indicated generally at 2 and consist of three jaw members 4.5 and 6, respectively. While three jaw members have been shown it is to be understood that this number may be varied if desired. The jaw'members 4, 5 and 6 are or" special construction in that they are provided with outstanding ribs such as 10 and 11, which ribs are spaced apart to provide recesses l2v therebetween. These ribs 10 and 11 serve to engage the casing head or slip bowl and support the slips. The inner face of each of the jaws is provided with teeth 13 to engage the pipe being supported. I

The respective jaw members may or may not be connectedtogether, both forms being old in the art. However, if the respective jaw members are to be connected together hinge plates 15 will be provided which plates are passed into the recesses 16 formed'inthe ribs of the jaws. Suitable pivot pins or bolts 1'? pass into the ribs and plates 15 to hold the plates in position. I

- In order that the operator may move the slips, handles such as 20 have been provided. These handles are arranged to collapse or telescope with respect to the awmembers and in the particular form of the invention here illustrated the handles are each made of a bar or rod 22, which is bent to a U construction with the ends or shanks 24 and 2% thereof bent sharply at right angles to the adjacent or mid-portion of the handle. The ends 23 are bent over after the shanks 24 and 24 of the handle have been passed through the ear 25 forr on the rib l0 and the plate 15 respectively. When this enlarged end 23 abuts against the lower face of he ear 25 further upward movement of the handle is stopped, and also it serves as a means to aiiix the handle to the slip so that the handle or lift will not separate from the slip. The shank 24 of the handle 22 passes through an opening 25 formed in the hinge plate 15 and has its end bent over at 23 in a manner the same as previously described. It is apparent with this construction that when the portion 27 of the handle which is gripped by the operator, is released, that the handle will drop by gravity to a collapsed position by the shanks 24 and 24 sliding through the ear 25 and the hinged plate 15 respectively.

It should be noted that the sides of the ribs 10 and 11 are cut away or curved inwardly as at 36 so that they form a cavity or recess.

It should be noted that the slots or grooves 16 in which the hinge plates 15 are mounted are slightly larger than the plates to provide a space 31 which permits relative movement of the respective jaws so that the set of slips as a whole will align themselves when being placed in position.

The plates 15 abut against the inside face of the groove 16 and bind the jaws to limit closing move ment of the jaws.

What is claimed is:

1. A pipe engaging slip comprising a plurality of jaws shaped to fit about a pipe, radial ribs on said jaws, hinge plates connecting said jaws pivotally together at their adjacent sides and handles on said slip slidable vertically in said slip.

2. A pipe engaging slip comprising a plurality of jaws shaped to fit about a pipe, radial ribs on said jaws, hinge plates connecting said jaws pivotally together at their adjacent sides and handles on said slip slidable vertically in said slip, one side of each handle engaging within one of said plates and one within one of said jaws.

A pipe engaging slip comprising aplurality of jaws shaped to fit about a pipe, radial ribs on said jaws, hinge plates connecting said jaws pivotally together at their adjacent sides and handles on said slip slidable vertically in said slip, said plates acting to limit swinging of the jaws thereon in either outward or inward positions.

4. A slip having recess means formed therein, a lift carried by the slip the arrangement being such that the major portion of the lift may be shifted into the recess means and means to prevent the separation of the lift and slip.

5. A slip for a tubing hanger or the like, said slip having recess means formed therein, and

lift carried by the slip. the arrangement being such that the major portion of the lift is adapted to be moved into the recess means and means to prevent the separation of the lift and slip.

6. A slip for a tubing hanger or the like, said slip having recess means and opening means in its top leading into the recess means, a lift secured to the slip and operating within the opening means and recess means, the arrangement being such that the major portion of the lift may be moved into the recess means.

'7. A slip for a tubing hanger or the like, having a recess formed therein, and a lift for the slip having a portion vertically movable into and out of the recess, and means to limit the relative vertical movement of said portion.

8. A slip for a tubing hanger or the like, having recess means formed therein and openings at its top which lead into the recess means, a lift element movably mounted within said openings and adapted to have portions thereof shifted into the recess means, and means to limit the upward movement of the lift element with respect to the slip to prevent the separation of the same.

9. A slip for a tubing hanger or the like, having recess means, and openings formed in its top, said openings leading into the recess means, a lift element having a generally inverted U-shaped portion, said generally inverted U-shaped portion having depending arms to enter the recess means,

and means to limit the upward movement of the lift element with respect to the slip to prevent separation of the lift element and slip.

10. A slip for a tubing hanger or the like, havinto and out of the recesses and having its endsattached to the slip.

11. A slip for a tubing hanger or the like, having recess means, and a-lift having its ends attached to the slip, the arrangement being such that the major portion of the lift is movable into and out of the recess means.

12. A slip for a tubing hanger or the like, having recess means and openings passing through its top leading into the recess means, and a gen erally inverted U-shaped lift movably mounted within said openings so that its lower ends may enter the recess means, said lower ends having stop elements preventing the separation of the lift and slip.

EDWIN A. JOHNSON. 

